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KMID : 0525720120170040210
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Journal of Chitin and Chitosan
2012 Volume.17 No. 4 p.210 ~ p.215
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Development of Food Preservative with Chitosan, Adipic acid and Medicinal Plant Orgin Antimicrobials
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Park La-Young
Jeong Eun-Ju
Ha Jong-Gill
Lee Shin-Ho
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Abstract
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The antimicrobial activities of 8 extracts from medicinal plants (Pogostermon cablin, Bentham, Chrysanthemum zawadskii, Lysimachia christinae Hance, Lespdeza cuneata G. Don, Phlomis umbrosa Turcz, Phellodendron amurense Ruprecht, Elshotzia ciliate Hylander and Cinnamomum zeylanicum) were investigated by paper disc method against various pathogens (Listeria. monocytogenes, Stapylococcus aureus, Bacillus cereus, Escherichia coli, Salmonella enterica, Hydrophila hydrophila, Pseudomonas. fluorecens and Vibrio parahaemolyticus), Their DPPH radical scarvenging activity were also evaluated. The extracts of Cinnamomum zeylanicum and Lysimachia christinae Hance were selected as antimicrobial agents for natural food preservatives due to their antimicrobial activity against the tested bacteria and high DPPH radical scavenging activity. Using the natural antimicrobial mixture (0.1% chitosan + 100ppm grapefruit seed extract + 0.2% adipic acid), two kinds of solution with 0.1% Cinnamomum zeylanicum (P1) or 0.1% Lysimachia christinae Hance (P2) were made to investigate the possibility as food preservatives. Viable cell of S, aureus reduced about 5~6 log cycle after treatment for 5 min with P1, or P2 but E. coli did not detected after the same treatment, The above mentioned pathogens did not detected after treatment for 5 min with P1 or P2.
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KEYWORD
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Chitosan, Antimicrobial acitivity, Natural food preservative, Cinnamomum zeylanicum, Lysimachia christinae Hance
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